Only advice I have is to take a deep breath and understand that if your son wants to pursue MT, there is a program out there for him. Only you can decide where to spend your money - we hired an audition coach b/c it was too overwhelming for me, pesonally, to get organized about it on top of other responsibilities (though D has done a lot of legwork herself and it isn’t essential to have a coach if you are a detail oriented person). Sending him to a summer intensive might help him see if he really wants to pursue MT as a career or just as a hobby before he goes down the college audition road…not all of them are ridiculously expensive, especially if you find one nearby that doesn’t include lodging. My D did TXMTW and it definitely solidified the idea for her. She has always taken private voice, but dance was offered at her school (not advanced, mind you, but enough to help her feel comfortable as a “mover”) and we relied on her school theatre directors and some community theatre opportunities to hone her acting skills. So far she has felt well prepared for the “audition season.”
Lots of good resources in the links posted above. Be sure to step away when you feel overwhelmed by information overload. You don’t have to do everything that others have done or suggested - you just have to do what works for you and your S…